Merge branch 'main' into instcombine-or-select-smax-to-abs

Author: wenju-he

.ci/monolithic-windows.sh

@@ -23,8 +23,8 @@ runtimes_targets="${4}"
 start-group "CMake"
 pip install -q -r "${MONOREPO_ROOT}"/.ci/all_requirements.txt
 
-export CC=cl
-export CXX=cl
+export CC=C:/clang/clang-msvc/bin/clang-cl.exe
+export CXX=C:/clang/clang-msvc/bin/clang-cl.exe
 export LD=link
 
 # The CMAKE_*_LINKER_FLAGS to disable the manifest come from research
@@ -49,6 +49,7 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D CMAKE_EXE_LINKER_FLAGS="/MANIFEST:NO" \
       -D CMAKE_MODULE_LINKER_FLAGS="/MANIFEST:NO" \
       -D CMAKE_SHARED_LINKER_FLAGS="/MANIFEST:NO" \
+      -D CMAKE_CXX_FLAGS="-Wno-c++98-compat -Wno-c++14-compat -Wno-unsafe-buffer-usage -Wno-old-style-cast" \
       -D LLVM_ENABLE_RUNTIMES="${runtimes}"
 
 start-group "ninja"

.ci/premerge_advisor_upload.py

@@ -12,9 +12,12 @@
 
 import generate_test_report_lib
 
-PREMERGE_ADVISOR_URL = (
-    "http://premerge-advisor.premerge-advisor.svc.cluster.local:5000/upload"
-)
+# These are IP addresses of the two premerge advisor instances. They should
+# eventually be updated to domain names.
+PREMERGE_ADVISOR_URLS = [
+    "http://34.82.126.63:5000/upload",
+    "http://136.114.125.23:5000/upload",
+]
 
 
 def main(commit_sha, workflow_run_number, build_log_files):
@@ -41,7 +44,8 @@ def main(commit_sha, workflow_run_number, build_log_files):
         ninja_failures = generate_test_report_lib.find_failure_in_ninja_logs(ninja_logs)
         for name, failure_message in ninja_failures:
             failure_info["failures"].append({"name": name, "message": failure_message})
-    requests.post(PREMERGE_ADVISOR_URL, json=failure_info)
+    for premerge_advisor_url in PREMERGE_ADVISOR_URLS:
+        requests.post(premerge_advisor_url, json=failure_info)
 
 
 if __name__ == "__main__":

.ci/utils.sh

@@ -40,13 +40,17 @@ function at-exit {
   fi
 
   if [[ "$retcode" != "0" ]]; then
-    python "${MONOREPO_ROOT}"/.ci/premerge_advisor_upload.py \
-      $(git rev-parse HEAD~1) $GITHUB_RUN_NUMBER \
-      "${BUILD_DIR}"/test-results.*.xml "${MONOREPO_ROOT}"/ninja*.log
     if [[ "$GITHUB_ACTIONS" != "" ]]; then
       python "${MONOREPO_ROOT}"/.ci/premerge_advisor_explain.py \
         $(git rev-parse HEAD~1) "${BUILD_DIR}"/test-results.*.xml \
         "${MONOREPO_ROOT}"/ninja*.log
+      python "${MONOREPO_ROOT}"/.ci/premerge_advisor_upload.py \
+        $(git rev-parse HEAD~1) $GITHUB_RUN_NUMBER \
+        "${BUILD_DIR}"/test-results.*.xml "${MONOREPO_ROOT}"/ninja*.log
+    else
+      python "${MONOREPO_ROOT}"/.ci/premerge_advisor_upload.py \
+        $(git rev-parse HEAD) $BUILDBOT_BUILDNUMBER \
+        "${BUILD_DIR}"/test-results.*.xml "${MONOREPO_ROOT}"/ninja*.log
     fi
   fi
 }

.github/workflows/containers/github-action-ci-tooling/Dockerfile

@@ -37,6 +37,14 @@ RUN apt-get update && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+# Create a new user with id 1001 as that is the user id that
+# Github Actions uses to perform the checkout action.
+RUN useradd gha -u 1001 -m -s /bin/bash
+RUN adduser gha sudo
+RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+# Don't set USER gha right away because we still need to install packages
+# as root in 'ci-container-code-format' and 'ci-container-code-lint' containers
+
 
 FROM base AS ci-container-code-format
 ARG LLVM_VERSION
@@ -51,6 +59,8 @@ ENV PATH=${LLVM_SYSROOT}/bin:${PATH}
 COPY llvm/utils/git/requirements_formatting.txt requirements_formatting.txt
 RUN pip install -r requirements_formatting.txt --break-system-packages && \
     rm requirements_formatting.txt
+USER gha
+WORKDIR /home/gha
 
 
 FROM base AS ci-container-code-lint
@@ -80,3 +90,5 @@ RUN apt-get update && \
 COPY llvm/utils/git/requirements_linting.txt requirements_linting.txt
 RUN pip install -r requirements_linting.txt --break-system-packages && \
     rm requirements_linting.txt
+USER gha
+WORKDIR /home/gha

.github/workflows/containers/github-action-ci-windows/Dockerfile

@@ -98,3 +98,45 @@ RUN powershell -Command \
     Add-Type -AssemblyName System.IO.Compression.FileSystem ; \
     [System.IO.Compression.ZipFile]::ExtractToDirectory('actions-runner-win.zip', $PWD) ;\
     rm actions-runner-win.zip
+
+# Set the LLVM_VERSION environment variable
+ENV LLVM_VERSION=21.1.2
+
+# Download and extract Clang compiler.
+# Create directories, download, extract, and clean up all in one layer
+RUN powershell -Command \
+    # --- Setup directories --- \
+    Write-Host "Creating directories..."; \
+    New-Item -Path "C:\temp-download" -ItemType "Directory" -Force ; \
+    New-Item -Path "C:\xz-utils" -ItemType "Directory" -Force ; \
+    New-Item -Path "C:\clang" -ItemType "Directory" -Force ; \
+    # --- 1. Download and extract xz --- \
+    Set-Location C:\temp-download ; \
+    Invoke-WebRequest -Uri "http://github.com/tukaani-project/xz/releases/download/v5.8.1/xz-5.8.1-windows.zip" -OutFile "xz.zip"; \
+    (Get-FileHash -Path "C:\temp-download\xz.zip" -Algorithm MD5).Hash -eq 'c3c69fdce3e825cc0b76123b36b0bcc2' ; \
+    Add-Type -AssemblyName "System.IO.Compression.FileSystem"; \
+    [System.IO.Compression.ZipFile]::ExtractToDirectory('C:\temp-download\xz.zip', 'C:\xz-utils'); \ 
+    # --- 2. Download and decompress Clang --- \
+    Invoke-WebRequest -Uri "http://github.com/llvm/llvm-project/releases/download/llvmorg-21.1.2/clang+llvm-21.1.2-x86_64-pc-windows-msvc.tar.xz" -OutFile "clang+llvm-21.1.2-x86_64-pc-windows-msvc.tar.xz" ; \
+    (Get-FileHash -Path "C:\temp-download\clang+llvm-21.1.2-x86_64-pc-windows-msvc.tar.xz" -Algorithm MD5).Hash -eq '0ae1d3effd9ab9d323f7fa595777f0a2' ; \
+    C:\xz-utils\bin_x86-64\xz.exe -d -qq clang+llvm-21.1.2-x86_64-pc-windows-msvc.tar.xz ; \
+    # --- 3. Extract clang --- \
+    C:\Windows\System32\tar.exe -xf clang+llvm-21.1.2-x86_64-pc-windows-msvc.tar -C C:\clang ; \
+    # --- 4. Clean up --- \
+    Set-Location C:\ ; \
+    Remove-Item C:\temp-download -Recurse -Force; \
+    Remove-Item C:\xz-utils -Recurse -Force; \
+    # -- 5. Shorten path to clang files & remove unnecessary files -- \
+    Set-Location C:\clang ; \
+    Rename-Item -Path "C:\clang\clang+llvm-21.1.2-x86_64-pc-windows-msvc" -NewName "C:\clang\clang-msvc" ; \
+    Set-Location C:\clang\clang-msvc ; \
+    Remove-Item -Path C:\clang\clang-msvc\libexec -Recurse -Force ; \
+    Remove-Item -Path C:\clang\clang-msvc\share -Recurse -Force ; \
+    Rename-Item -Path "C:\clang\clang-msvc\bin" -NewName "C:\clang\clang-msvc\bin-full" ; \
+    New-Item -Path "C:\clang\clang-msvc\bin" -ItemType Directory -Force ; \
+    Set-Location C:\clang\clang-msvc\bin ; \
+    Copy-Item -Path C:\clang\clang-msvc\bin-full\*.dll -Destination C:\clang\clang-msvc\bin\. ; \
+    Copy-Item -Path C:\clang\clang-msvc\bin-full\clang-cl.exe -Destination C:\clang\clang-msvc\bin\. ; \
+    Copy-Item -Path C:\clang\clang-msvc\bin-full\lld-link.exe -Destination C:\clang\clang-msvc\bin\. ; \
+    Set-Location C:\clang\clang-msvc ; \
+    Remove-Item -Path C:\clang\clang-msvc\bin-full -Recurse -Force ;

.github/workflows/libcxx-run-benchmarks.yml

@@ -64,17 +64,21 @@ jobs:
           path: repo # Avoid nuking the workspace, where we have the Python virtualenv
 
       - name: Run baseline
+        env:
+          BENCHMARKS: ${{ steps.vars.outputs.benchmarks }}
         run: |
           source .venv/bin/activate && cd repo
           python -m pip install -r libcxx/utils/requirements.txt
           baseline_commit=$(git merge-base ${{ steps.vars.outputs.pr_base }} ${{ steps.vars.outputs.pr_head }})
-          ./libcxx/utils/test-at-commit --commit ${baseline_commit} -B build/baseline -- -sv -j1 --param optimization=speed ${{ steps.vars.outputs.benchmarks }}
+          ./libcxx/utils/test-at-commit --commit ${baseline_commit} -B build/baseline -- -sv -j1 --param optimization=speed "$BENCHMARKS"
           ./libcxx/utils/consolidate-benchmarks build/baseline | tee baseline.lnt
 
       - name: Run candidate
+        env:
+          BENCHMARKS: ${{ steps.vars.outputs.benchmarks }}
         run: |
           source .venv/bin/activate && cd repo
-          ./libcxx/utils/test-at-commit --commit ${{ steps.vars.outputs.pr_head }} -B build/candidate -- -sv -j1 --param optimization=speed ${{ steps.vars.outputs.benchmarks }}
+          ./libcxx/utils/test-at-commit --commit ${{ steps.vars.outputs.pr_head }} -B build/candidate -- -sv -j1 --param optimization=speed "$BENCHMARKS"
           ./libcxx/utils/consolidate-benchmarks build/candidate | tee candidate.lnt
 
       - name: Compare baseline and candidate runs

.github/workflows/pr-code-format.yml

@@ -25,14 +25,6 @@ jobs:
         with:
           fetch-depth: 2
 
-      # We need to set the repo checkout as safe, otherwise tj-actions/changed-files
-      # will fail due to the changed ownership inside the container.
-      # TODO(boomanaiden154): We should probably fix this by having the default user
-      # in the container have the same ID as the GHA user on the host.
-      - name: Set Safe Directory
-        run: |
-          chown -R root $(pwd)
-
       - name: Get changed files
         id: changed-files
         uses: tj-actions/changed-files@ed68ef82c095e0d48ec87eccea555d944a631a4c # v46.0.5

.github/workflows/pr-code-lint.yml

@@ -31,11 +31,6 @@ jobs:
         with:
           fetch-depth: 2
 
-      # FIXME: same as in ".github/workflows/pr-code-format.yml"
-      - name: Set Safe Directory
-        run: |
-          chown -R root $(pwd)
-      
       - name: Get changed files
         id: changed-files
         uses: tj-actions/changed-files@ed68ef82c095e0d48ec87eccea555d944a631a4c # v46.0.5

.github/workflows/release-binaries.yml

@@ -58,7 +58,6 @@ jobs:
       ref: ${{ steps.vars.outputs.ref }}
       upload: ${{ steps.vars.outputs.upload }}
       target-cmake-flags: ${{ steps.vars.outputs.target-cmake-flags }}
-      ccache: ${{ steps.vars.outputs.ccache }}
       build-flang: ${{ steps.vars.outputs.build-flang }}
       release-binary-basename: ${{ steps.vars.outputs.release-binary-basename }}
       release-binary-filename: ${{ steps.vars.outputs.release-binary-filename }}
@@ -123,13 +122,6 @@ jobs:
         echo "release-binary-filename=$release_binary_basename.tar.xz" >> $GITHUB_OUTPUT
 
         target="$RUNNER_OS-$RUNNER_ARCH"
-        # The hendrikmuhs/ccache-action action does not support installing sccache
-        # on arm64 Linux.
-        if [ "$target" = "Linux-ARM64" ]; then
-          echo ccache=ccache >> $GITHUB_OUTPUT
-        else
-          echo ccache=sccache >> $GITHUB_OUTPUT
-        fi
 
         # The macOS builds try to cross compile some libraries so we need to
         # add extra CMake args to disable them.
@@ -140,24 +132,16 @@ jobs:
             arches=arm64
           else
             arches=x86_64
-            # Disable Flang builds on macOS x86_64.  The FortranLower library takes
-            # 2-3 hours to build on macOS, much slower than on Linux.
-            # The long build time causes the release build to time out on x86_64,
-            # so we need to disable flang there.
-            target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_PROJECTS='clang;lld;lldb;clang-tools-extra;polly;mlir'"
           fi
           target_cmake_flags="$target_cmake_flags -DBOOTSTRAP_BOOTSTRAP_DARWIN_osx_ARCHS=$arches -DBOOTSTRAP_BOOTSTRAP_DARWIN_osx_BUILTIN_ARCHS=$arches"
         fi
 
-        build_flang="true"
-
         if [ "$RUNNER_OS" = "Windows" ]; then
           # The build times out on Windows, so we need to disable LTO.
           target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_LTO=OFF"
         fi
 
         echo "target-cmake-flags=$target_cmake_flags" >> $GITHUB_OUTPUT
-        echo "build-flang=$build_flang" >> $GITHUB_OUTPUT
         case "${{ inputs.runs-on }}" in
           ubuntu-22.04*)
             build_runs_on="depot-${{ inputs.runs-on }}-16"
@@ -222,15 +206,12 @@ jobs:
     - name: Configure
       id: build
       shell: bash
-      env:
-        CCACHE_BIN: ${{ needs.prepare.outputs.ccache }}
       run: |
         # There were some issues on the ARM64 MacOS runners with trying to build x86 object,
         # so we need to set some extra cmake flags to disable this.
         cmake -G Ninja -S llvm -B ${{ steps.setup-stage.outputs.build-prefix }}/build \
             ${{ needs.prepare.outputs.target-cmake-flags }} \
             -C clang/cmake/caches/Release.cmake \
-            -DBOOTSTRAP_LLVM_PARALLEL_LINK_JOBS=1 \
             -DBOOTSTRAP_BOOTSTRAP_CPACK_PACKAGE_FILE_NAME="${{ needs.prepare.outputs.release-binary-basename }}"
 
     - name: Build

.github/workflows/release-documentation.yml

@@ -25,6 +25,10 @@ on:
         description: 'Upload documentation'
         required: false
         type: boolean
+    secrets:
+      WWW_RELEASES_TOKEN:
+        description: "Secret used to create a PR with the documentation changes."
+        required: false
 
 jobs:
   release-documentation: